Plant Search » Rubiaceae (The Madder Family)
'Frostproof' is a hardy gardenia with double rose-like flowers with intoxicating gardenia fragrance and good bloom even in cool springs and summers.
'Kleim's Hardy' has incredible gardenia fragrance and is hardy to minus 18 degrees Celsius! Go figure.
‘Summer Snow’ has beautiful pure white double flowers that are sweetly fragrant. Reportedly hardy to zone 6 which would make it the hardiest of the hardyGardenia.